Tag: acid-base

Exploring acid-base properties of household chemicals using a universal indicator

Overview Adapted from Scientific American and Connections Education In this colorful experiment, students extract red cabbage indicator (an anthocyanin) with isopropyl alcohol or water. Students then create a series of solutions of household chemicals and use their indicator and pH strips (or a pH probe, $19) to correlate pH to color change. Based on their results,…

A syringe with clear liquid on a digital scale

Gravimetric Acid-Base Titration

At home Hands-on Experiments

This analysis is designed to replicate the classic acid-base determination of an unknown titration, but using household chemicals as the standard, titrant, indicator, and unknown. Notably this analysis employs a digital scale and syringes in the place of pipettes and burettes, making this a unique gravimetric approach to acid base titrations.